The Garage Mt Edge - Bosch Car Service - Oil filter problems. Gave in vehicle on 3 occassions problem still persists

On 3 differnet occassions I have given in my vehicle for oil leaks. I called in after the 3rd attempt and all I hear is I will speak to the technician and call you back. I never get called back nor receive an email. Highly unethical for an establishment as Bosch. This is the Bosch at the garage in Mount Edgecombe. I am hoping that now this review is posted I will actually be geting a call or an email